Window-regulator spring assembly



March 30 '1926. 1,578,990

f E. E. HEINTZ WINDOW REGULATOR SPRING ASSEMBLY 1925 2 Sheets-sheet 1 Filed Nov. 5

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March so ,11926. l 1,578,990

E. E. HEINTZ WINDOW REGULATOR SPRING ASSEMBLY Filed Nov. 5, 1923 2 Sheets-Sheet 2 Emst 266693571@ Patented Mar. v30, 1.926.

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ERNEST E. 1,IEINTz,y E DETROIT, MICHIGAN, AssIGNoR To TERNSTEDT MANUEACTUR- ING COMPANY, 0E DETROIT, MICHIGAN, A CoRIoRATIoN or MICHIGAN.

`'WINDOW- ImGULATCR SPRING ASSEMBLY.

Application 1ed November', 1923.' Serialy No. 672,791. i

T 0 all whom t mary conocfft:V Y f f Be 1t known that I, ERNEST. E. HEINTZ,

a citizen ofthe United States, residing at De-` troit, in the county of W'ayne and State of i lvlichigan1 have invented certain new and useful Improvements lin VindoW-Regulator Spring Assemblies, of, which the following is a specification. i

This invention relates to Window regu# lators andlias for itsobject an'improved` counterba'lancing spring retainer or cup. It is the object of the invention to provide a counterbalancing spring cup and a drum construction lwhich will permit of a cheap. v and ready assembly Iand which will prevent 1 the coil counterbalancing spring from drumming on the metal parts.

It is not broadly new to provide a spring cup for retaining the counterbalancing 2Q spring in a Window reg*ulatoigfsuchv a cupj` construction isshowvn intheprior Allmand & LaWr'encePatent'No. 1,278,554.` `However7 the Ypresent cup constructionis quite different from the cup shown inthe Allmand & Lawrencepatent as that cup rotated WithV the drum or sprocketwvheel While in the'V present construction the-cup is stationary and becomes a permanent part of the regular-V tor plate as will be more fully explained hereinafter.

In the drawings: Fig. lk is an elevational Vdrum assembly, f

2 is a horizontal sectiontaken'onv the line2- 2ofFig.l. i.

Fig. 3 is ya'detailed section takenfon the line 3- 3 ofFig. l. Fig. 4f is av section taken onthe line 4 4 of Fig.f2. i

rig. 5 is an inside amaba-.0f the @pf l c rim of the cupso thatithe SPllng maybe and the spring.

5 Eig. 5.y

Fig. 7 is a composite vien7 showing the assembly ing stud.

L is the :regulator plate. To this is atofthe spring cup drum and bear- 5 that a positive movement is secured between ytion as much asp'ossi'ble tomeet both the ment is reduced to a minimum; in fact in them. These 'serve' as a shipping 'container vfor the clock-like counterba'lancing`| spring 9", j. yThe lug-z' isthe anchorfor oneend of the Y Fig, Gis a section taken on the 6 -6 offv f over-the `end `of the sprmgas at m. This .loop Which fits over afpost as hasV often been tached the spacer bar b `Which supports thev A cable To the. cable and thefdrum rand, theV sprocket: and there is I1o"occasion ,for any slippage of the cable on eithervthe spool or drum.v This is explained in my co-pend-ingV appli-V catin Ser..No. 659,449, Wherethis partof h' the construction is describedand 'claimedj However, so far :as the [invention here;` claimedgisconcerned, the drum might be a; sprocket: Wheel as Well as a cable drum. Y It "isfdesirable inv Window regulators'. to have a counterbalancing spring Which stores up energy on the descentv of the Window which energy helps to` ra-ise thefwindovv on. the returnmovementof the Window. This tends to equalizel the driving eii'ort in either direction. It is necessary,y however, in they keen competition that has arisen in the'regu lator business to c heapenregulator construcmarket and to Aenlarge theiield iof-Y usage of' regulators "so as to reach v'the v lower Y priced cars." It is therefore expedient to so arrange-'r productionand the assembling operations'. f

that the costfof the coimterbalancing ele-1 some-of' thecheaper cars they counterbialanc--- ing springhas been entirely eliminated in a regulator in order to bring'the regulator Y price Within the reachof-the car. I? f I therefore employ a stamped metal* cup f g.` This cuphas a pair of lugs 72. stamped Vieivof the upper portion of the regulator equipped with my improved cup construction; andthe improved g operation. Inthefbottomfof acupis put,`

a paper "Washerc'to' prevent rattling.V They' cups aire either shippedfto the spri'n'gQma-nu#i out of the bottomand a 'lug i turned up into the cup. This cup 'can obviously be made' at one punching operation and vone 'stamping facturer. or the springl manufacturer makes spring.f -This is 'turned up very close vto the l fastened intjothe cup simplyy by bending very much lessens thel cost 'of the spring as itisa rather` difficult and expensive'opera` tion'on 'these' springs to forma complete the'case' in thepast.v l

The` springfret'ained in thev cup' is Vthen shipped' to th'e'regulator manufacturer. v The regulator'manufacturer stampsthe lplate m v with a boss a' which is properly slotted-'so that the-lugs h maybe threaded through .110

pletes the assembly of the spring in the the slots and then turned over and hammered down as at l (Fig. 2). This coinspring cup and onto the regulator plate.

The assembler then places the drum over the spring cup as shown in Figs. 7 and 2. He turns the drum around until the notch s inthe hub of the drum registers with the inner end 0 of the counterbalancing spring. When the notch has been slipped over the end of the counterbalancing spring then the springis anchored to the rotating drum as Well as to the stationary cup. `The stud.

or rivet 1J is then inserted through the drum and the reduced end riveted over as shown yin Fig. 2.v vThe shoulder g between'the reduced end and the main portion of the rivet serves to prevent any binding action von the rotatable member so that this stud forms a free and easy bearing for the rotating inember. l f

The drum is preferably a die casting but it may be a stamping. Another paper Washer s is inserted in the bottom of the drum so as to prevent the" spring from contacting with ythe resonant metal at this side of the spring.

What I claim is:

l. In a Window regulatorliaving a iotaty able .member anda'l draft member movable thereover, the combinationv with said rotatable member, of a regulator plate, a separate'spring cup Vanchored to' the vregulator plate and telescoping in the rotatable niem- Vber, a counterbala'ncing spring anchored at one end in said' cup and arranged to be contained therein before assembly of the cup in the plate and having the other end anchored Vto the rotating member.

2. In a Window regulator having a rotatable member and a draft member movable thereover, the combination With the said rotatable member, a spring retaining cup n telescoping intor the rotatable member and provided With stamped out lugs, a regulator plate to vWhich the cup is fastened by said lugs, anda coiled counterbalancing spring having one end anchored to the cup and the other end anchored to the rotatable member and contained Within the cup.

3.' In a Window regulator having a rotat-k'y able member and a draft member movablethereover, the combination with said rotat# able'member, of a spring retaining cup provided vvith an inwardlyl struck lug adja-v cent to the rim of the cup, a regulator plate to which the cup is anchored, the saidy cup telescoping into the rotatable member and' a coiled counter-balancing spring having a bent over end anchored to the cup by being Vdropped between the turned in lug and the rim of the cup and having its other end anchoredto the rotatableL member.

4. In a Window regulator having. a rotatable member and a draft membermovable thereover, theA combination With said rotatable member provided With an inwardly `projecting hub having a notclrtherein, a spring cup, a regulator plate tof which the jacent to the rim, a regulator plate to Whichf the cup maybe fastened and a coiled counterbalancing spring which may .be assembled in the cup before that member'is fastened in place having its ends bent and one engaged between the turned in lug of the cup and the rim of the cup and the other end ofthe spring engaging in the notch ,in the rotatable member ivlieii the. same' is .telescoped over the cup.

6. In a Window regulator having a rotatable member anda draft'niember movable thereover, the combinationwith said rotatable member of a cup-lilrevdrum provided with an inwardlyv projecting notclied'hub, a

.spring retainingfcup, a regulator plate to which the spring retaining cup is separately clamped, and a counterbalancing coiled spring having one end secured to the cup to anchor the same 'and theinner end engaged in the notch of the hub of vthe drum When the same is telescoped over the cup.

7. In a Winden7 regulator the combination of a regulator plate, a rotating member rotatably supported thereon and provided with a lcup portion, a coiled counterbalancing spring engaging'betvveen therotatable member and the regulator plate,` and one or more paper Washers'located on thev sides of the spring for deadening any vibration..

8. In a Window regulator, the combination` of a bossed regulator plate, af'rotatable mem# ber provided With an inwardly projecting hub, and a shouldered rivet for riveting'theV hub of the rotatable member tothe boss'ed portion so that the member Will berotatably supported, the reduced portionof the rivet being turned ,over on the inside of the boss to complete the assembly.

9. InA av Window regulator, a regulator plate, a cup member, a coil counterbalanc` ing spring contained in said member, and

a Washer of fibrous material contained between the metal of the cup andthe side vof the counterbalancing spring.' l

In testimonyivhereof I afliX my signature.

ERNEST E. HEIN'IZ. 

